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Finding the Fourth Proportional to 100,111.20, 150,166.80 and 62,786.40

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Solution

The fourth proportional to 100,111.20, 150,166.80 and 62,786.40 is: 94,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.20 : 150,166.80 = 62,786.40 : x
  2. Step 2: Convert to fraction form
    100,111.20/150,166.80 = 62,786.40/x
  3. Step 3: Cross multiply
    100,111.20x = 150,166.80 × 62,786.40
  4. Step 4: Simplify right side
    100,111.20x = 9,428,432,771.52
  5. Step 5: Solve for x
    x = 9,428,432,771.52/100,111.20
  6. Step 6: Final answer
    x = 94,179.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.